Seiko Cal. 3870 - 645

Seiko 3870-645

This Kinetic model from 1973 features a 35mm Titanium case. Powered by the 3870 caliber with 30j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-0b2365909af2]

Also known as: Sumo, Flighty

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
35mm
Case Thickness
11.2mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
120m
Dial Color
White
Jewels
30j
Frequency
28,800 bph
Power Reserve
67 hours
Year
1973

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